Note
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Specifies that the current frame will be encoded as a key frame.
Syntax
HRESULT SetKeyFrame();
Return value
The method returns an HRESULT. Possible values include, but are not limited to, those in the following table.
| Return code | Description |
|---|---|
|
The method succeeded. |
Remarks
To force the encoder to make the current frame a key frame, call this method before calling IMediaObject::ProcessOutput or IMFTransform::ProcessOutput.
Each call to this method applies to a single frame. After processing this frame, the encoder resumes automatically assigning key frames (bounded by the maximum key frame distance).
Requirements
| Requirement | Value |
|---|---|
| Minimum supported client | Windows XP [desktop apps only] |
| Minimum supported server | Windows Server 2003 [desktop apps only] |
| Target Platform | Windows |
| Header | wmcodecdsp.h |